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Can your engine coolant evaporate

Updated: 10/22/2022
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12y ago

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Its primarily the WATER in the coolant that evaporates, not the actual coolant. Adding back just the water, only a good idea in the summer months. Best approach if your way down and its been a few years is refresh (not flush) the coolant. Flushing is the best way if you have the skills, but can cause issues to backyard mechanics like air bubbles, boiling over, huge mess, scalding, etc. Draining the radiator every couple of years should give you no issues for the life of the car. Buy gallon of coolant concentrate and a gallon of distilled water. Once the car has cooled down (not hot, not cold, warm) open the radiator cap, then drain the radiator via the white plastic drain plug at the bottom of radiator into a milk jug (get 2 to be sure). Mix 1/2 gallon concentrated coolant, 1/2 gallon distilled water. Pour back in. add more mix if necessary. Once its to the cap, start the engine. you may need to add a small amount more. Hurry and close the cap before it gets hot. From there its just top off the overflow tank. DO NOT mix the 50/50 by pouring in the antifreeze, then the water directly in the radiator. Mix in a gallon jug.

Now you have a good idea how much water, how much coolant you have. Car will run a whole lot better. You will also have left over mix to add to overflow. Do this every few years, and your set for as long as you have the car. Bye Bye

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